US20160343783A1 - Light emitting display device - Google Patents
Light emitting display device Download PDFInfo
- Publication number
- US20160343783A1 US20160343783A1 US14/950,964 US201514950964A US2016343783A1 US 20160343783 A1 US20160343783 A1 US 20160343783A1 US 201514950964 A US201514950964 A US 201514950964A US 2016343783 A1 US2016343783 A1 US 2016343783A1
- Authority
- US
- United States
- Prior art keywords
- light emitting
- pixel
- light
- substrate
- electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/352—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels the areas of the RGB subpixels being different
-
- H01L27/3246—
-
- H01L27/3216—
-
- H01L27/3218—
-
- H01L27/322—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
- H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
- H10K59/353—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels characterised by the geometrical arrangement of the RGB subpixels
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/16—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering
- H10K71/166—Deposition of organic active material using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering using selective deposition, e.g. using a mask
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
A light emitting display device includes: a first substrate; a plurality of pixels arranged on the first substrate in a matrix and divided into a plurality of unit pixels arranged in a row direction and in a column direction, each of the unit pixels comprising a first pixel and a second pixel are arranged along the row direction, and a third pixel arranged in the column direction with respect to the first pixel and the second pixel; a first electrode corresponding to each of the pixels; a pixel defining layer partitioning the respective pixels on the substrate and having openings exposing the first electrode through the pixel defining layer; first light emitting layers consecutively on the first electrode of the first pixel and the second pixel of the unit pixels arranged in the same row line; second light emitting layers consecutively on the first electrode of the third pixel of the unit pixels arranged in the same row line; and a second electrode on the first light emitting layer and the second light emitting layer.
Description
- This application claims priority to and the benefit of Korean Patent Application No. 10-2015-0053237, filed on Apr. 15, 2015 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.
- 1. Field
- Aspects of embodiments of the present invention relate to a light emitting display device.
- 2. Description of the Prior Art
- Among light emitting display devices, an organic light emitting display device is a self-luminous display device which has the characteristics of a relatively wide viewing angle, superior contrast, and high response speed, and thus has been noticed as the next-generation display device.
- An organic light emitting display device has a light emitting layer that is made of an organic light emitting material arranged between an anode electrode and a cathode electrode. If anode and cathode voltages are applied to these electrodes, respectively, holes that are injected from the anode electrode move to the light emitting layer through a hole injection layer and a hole transport layer, and electrons move to the light emitting layer through an electron injection layer and an electron transport layer. In the light emitting layer, the electrons and the holes are recombined, and through this recombination, excitons are generated. As the generated excitons are transited from an excited state to a ground state, the light emitting layer emits light to display an image thereon.
- The organic light emitting display device may include a pixel defining layer having an opening for exposing the anode electrode that is formed on each of pixels, and a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode electrode are formed on the anode electrode that is exposed through the opening of the pixel defining layer. Among them, the light emitting layer may be formed in various methods, and one of such methods is a deposition method. Recently, as the deposition method, a small mask scanning deposition method, in which a deposition process can be performed in small-scale equipment, has been widely used.
- In the case of forming the light emitting layer of the organic light emitting display device using the small mask scanning deposition method, the light emitting layer can be formed by arranging a substrate and a mask that is smaller than the substrate to be spaced apart from each other and depositing an organic light emitting material on the substrate while moving the mask and the substrate relatively to each other.
- The above information disclosed in this Background section is only to enhance the understanding of the background of the invention, and therefore it may contain information that does not constitute prior art.
- In the case where the substrate and the mask that is smaller than the substrate are arranged to be spaced apart from each other, the organic light emitting material may be deposited in a direction of an unwanted area of the substrate, for example, adjacent pixels, through a gap space, and thus the light emitting layers may be formed to overlap each other between the adjacent pixels. For example, in the case of the pixels which emit color light that is different from the color light of the adjacent pixels, the light emitting layers that emit substantially different color lights may be formed to overlap each other between the adjacent pixels. Accordingly, in order to reduce overlapping of the light emitting layers that emit different color lights between the adjacent pixels, the organic light emitting display device may be manufactured so that the gap distance between the adjacent pixels becomes larger.
- However, as the gap distance between the adjacent pixels that emit different color lights becomes larger, the aperture ratio of the pixels becomes lower.
- Accordingly, according to aspects of embodiments of the present invention, a light emitting display device may increase the aperture ratio of pixels through reduction of a gap distance between adjacent pixels that emit different color lights.
- Additional aspects, subjects, and features of the present invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
- According to aspects of some embodiments of the present invention, a light emitting display device includes: a first substrate; a plurality of pixels arranged on the first substrate in a matrix and divided into a plurality of unit pixels arranged in a row direction and in a column direction, each of the unit pixels including a first pixel and a second pixel arranged along the row direction, and a third pixel arranged in the column direction with respect to the first pixel and the second pixel; a first electrode corresponding to each of the pixels; a pixel defining layer partitioning the respective pixels on the first substrate and having openings exposing the first electrode through the pixel defining layer; first light emitting layers consecutively disposed on the first electrode of the first pixel and the second pixel of the unit pixels arranged in the same row line; second light emitting layers consecutively disposed on the first electrode of the third pixel of the unit pixels arranged in the same row line; and a second electrode disposed on the first light emitting layer and the second light emitting layer.
- According to some embodiments, the first light emitting layers are disposed on both an upper surface of the pixel defining layer between the first pixel and the second pixel of the unit pixels in the same row line and an upper surface of the pixel defining layer between the unit pixels, and have a stripe shape.
- According to some embodiments, the first light emitting layers and the second light emitting layers alternate in the column direction.
- According to some embodiments, the first light emitting layers or the second light emitting layers face each other between the adjacent unit pixels in the column direction.
- According to some embodiments, the first light emitting layer is a yellow light emitting layer configured to emit yellow light, and the second light emitting layer is a blue light emitting layer configured to emit blue light.
- According to some embodiments, the light emitting display device further includes: a second substrate disposed on the second electrode; and a color filter disposed on the second substrate, wherein the color filter includes: a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the second substrate; and a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the second substrate.
- According to some embodiments, the first color is red, and the second color is green.
- According to some embodiments, the color filter further includes a third color filter corresponding to the third pixel and configured to perform filtering of light that is discharged from the second light emitting layer and to emit a light having a color purity that is different from a color purity of the light that is discharged from the second light emitting layer in the direction of the second substrate.
- According to some embodiments, the light emitting display device further includes: a second substrate disposed on the second electrode; and a color filter disposed between the first substrate and the first electrode, wherein the color filter includes: a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the first substrate; and a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the first substrate.
- According to some embodiments, the first pixels or the second pixels face each other between the adjacent unit pixels among the unit pixels arranged in the same row line.
- According to some example embodiments of the present invention, a light emitting display device includes: a first substrate; a plurality of pixels arranged on the first substrate in a matrix and divided into a plurality of unit pixels arranged in a row direction and in a column direction, each of the unit pixels including a first pixel and a second pixel arranged along the row direction, and a third pixel arranged in the column direction with respect to the first pixel and the second pixel; a first electrode corresponding to each of the respective pixels and; a pixel defining layer partitioning the respective pixels on the first substrate and having a gap distance between a third opening exposing the first electrode of the third pixel and a second opening exposing the first electrode of the second pixel that is longer than a gap distance between a first opening exposing the first electrode of the first pixel and the second opening; first light emitting layers consecutively disposed on the first electrode of the first pixel and the second pixel of the unit pixels in the same row line; second light emitting layers consecutively disposed on the first electrode of the third pixel of the unit pixels in the same row line; and a second electrode disposed on the first light emitting layer and the second light emitting layer.
- According to some embodiments, the first light emitting layers are disposed on both an upper surface of the pixel defining layer between the first pixel and the second pixel of the unit pixels in the same row line and an upper surface of the pixel defining layer between the unit pixels, and have a stripe shape.
- According to some embodiments, the first light emitting layers and the second light emitting layers alternate in the column direction.
- According to some embodiments, the first light emitting layers or the second light emitting layers face each other between the adjacent unit pixels in the column direction.
- According to some embodiments, the first light emitting layer is a yellow light emitting layer configured to emit yellow light, and the second light emitting layer is a blue light emitting layer configured to emit blue light.
- According to some embodiments, the light emitting display device further includes: a second substrate disposed on the second electrode; and a color filter disposed on the second substrate, wherein the color filter includes: a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the second substrate; and a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the second substrate.
- According to some embodiments, the first color is red, and the second color is green.
- According to some embodiments, the color filter further includes a third color filter corresponding to the third pixel and configured to perform filtering of light that is discharged from the second light emitting layer and to emit a light having a color purity that is different from a color purity of the light that is discharged from the second light emitting layer in the direction of the second substrate.
- According to some embodiments, the light emitting display device further includes: a second substrate disposed on the second electrode; and a color filter disposed between the first substrate and the first electrode, wherein the color filter includes: a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the first substrate; and a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the first substrate.
- According to some embodiments, the first pixels or the second pixels face each other between the adjacent unit pixels among the unit pixels in the same row line.
- According to the light emitting display device according to an embodiment of the present invention, the gap distance between the first pixel and the second pixel that emit different color lights among the unit pixels arranged in the same row line may be reduced, and thus the aperture ratio of the first pixel and the second pixel may be increased.
- Accordingly, the whole pixel aperture ratio of the light emitting display device may be increased.
- The effects according to the present invention are not limited to the contents as described above, and further various aspects are included in the following description.
- The above and other aspects, features, and characteristics of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a schematic plan view illustrating a pixel arrangement of a light emitting display device according to an example embodiment of the present invention; -
FIG. 2 is a plan view illustrating another example of the pixel arrangement ofFIG. 1 ; -
FIG. 3 is a plan view illustrating still another example of the pixel arrangement ofFIG. 1 ; -
FIG. 4 is a cross-sectional view of a portion that is taken along the line I-I′FIG. 1 ; -
FIG. 5 is a cross-sectional view of a portion that is taken along the line II-II′ ofFIG. 1 ; -
FIG. 6 is a cross-sectional view of a portion that is taken along the line ofFIG. 1 ; -
FIG. 7 is a schematic perspective view illustrating the corresponding relationship between a pattern of an organic light emitting layer and a color filter ofFIGS. 4 and 5 ; -
FIGS. 8 to 18 are cross-sectional views and a perspective view explaining a method for manufacturing a light emitting display device according to an example embodiment of the present invention; -
FIG. 19 is a cross-sectional view of a portion that corresponds to portions ofFIGS. 4 and 5 in a light emitting display device according to another example embodiment of the present invention; and -
FIG. 20 is a cross-sectional view of a portion that corresponds to portions ofFIGS. 4 and 5 in a light emitting display device according to still another example embodiment of the present invention. - Aspects and features of the present invention and methods of accomplishing the same may be understood more readily by reference to the following detailed description of example embodiments and the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be more thorough and more complete and will more fully convey the concept of the invention to those skilled in the art, and the present invention will only be defined by the appended claims, and their equivalents.
- It will also be understood that when a layer is referred to as being “on” another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. The same reference numbers indicate the same components throughout the specification.
- It will be understood that, although the terms first, second, third etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.
- Spatially relative terms, such as “beneath,” “below,” “lower,” “under,” “above,” “upper,” and the like, may be used herein for ease of explanation to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or in operation, in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “below” or “beneath” or “under” other elements or features would then be oriented “above” the other elements or features. Thus, the example terms “below” and “under” can encompass both an orientation of above and below. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein should be interpreted accordingly.
- It will be understood that when an element or layer is referred to as being “on,” “connected to,” or “coupled to” another element or layer, it can be directly on, connected to, or coupled to the other element or layer, or one or more intervening elements or layers may be present. In addition, it will also be understood that when an element or layer is referred to as being “between” two elements or layers, it can be the only element or layer between the two elements or layers, or one or more intervening elements or layers may also be present.
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present invention. As used herein, the singular forms “a” and “an” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises,” “comprising,” “includes,” and “including,” when used in this specification, specify the presence of the stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list.
- As used herein, the term “substantially,” “about,” and similar terms are used as terms of approximation and not as terms of degree, and are intended to account for the inherent deviations in measured or calculated values that would be recognized by those of ordinary skill in the art. Further, the use of “may” when describing embodiments of the present invention refers to “one or more embodiments of the present invention.” As used herein, the terms “use,” “using,” and “used” may be considered synonymous with the terms “utilize,” “utilizing,” and “utilized,” respectively. Also, the term “exemplary” is intended to refer to an example or illustration.
- Hereinafter, aspects of example embodiments of the present invention will be described with reference to the accompanying drawings.
-
FIG. 1 is a schematic plan view illustrating a pixel arrangement of a light emitting display device according to an example embodiment of the present invention.FIG. 2 is a plan view illustrating another example of the pixel arrangement ofFIG. 1 , andFIG. 3 is a plan view illustrating still another example of the pixel arrangement ofFIG. 1 . - Referring to
FIG. 1 , a light emittingdisplay device 100 according to an example embodiment of the present invention includes a display area DA that defines a plurality of pixels P, which display an image on afirst substrate 110 and are arranged in a matrix form, and a non-display area NDA that is positioned on the outside of the display area DA. - The plurality of pixels P may be divided into a plurality of unit pixels UP arranged in a row direction X and in a column direction Y on the
substrate 110. Each of the unit pixels UP includes a first pixel P1 and a second pixel P2 arranged in the row direction X, and a third pixel P3 arranged in the column direction Y with respect to the first pixel P1 and the second pixel P2. The first pixel P1, the second pixel P2, and the third pixel P3 may be pixels that emit different color lights. For example, the first pixel P1 may be a red pixel that emits red light, the second pixel P2 may be a green pixel that emits green light, and the third pixel P3 may be a blue pixel that emits blue light, but the pixels are not limited thereto. - Additionally, the first pixels P1 and the second pixels P2 of the unit pixels UP arranged in the same row line may be arranged in a line, and the third pixels P3 of the unit pixels UP arranged in the same row line may be arranged in a line. Further, in each unit pixel UP, the area of the third pixel P3 may be larger than the area of the first pixel P1 and the area of the second pixel P2, but is not limited thereto. Further, in the unit pixels UP arranged in the same row line, the first pixels P1 and the second pixels P2 may be alternately arranged, but are not limited thereto. For example, as illustrated in
FIG. 2 , the pixels P, which face each other between the adjacent unit pixels UP among the unit pixels UP arranged in the same row line on thefirst substrate 110 a, may be the first pixels P1 or the second pixels P2. Further, as illustrated inFIG. 3 , the pixels P, which face each other between the adjacent unit pixels UP among the unit pixels UP arranged in the column line on thefirst substrate 110 b, may be the same pixels, for example, the third pixels P3. - Next, the structure of the light emitting
display device 100 will be described in more detail. Hereinafter, example structures of the first pixel P1 portion, the second pixel P2 portion, and the third pixel P3 portion of the unit pixel UP will be described with respect to the light emittingdisplay device 100. -
FIG. 4 is a cross-sectional view of a portion that is taken along the line I-I′FIG. 1 ,FIG. 5 is a cross-sectional view of a portion that is taken along the line II-II′ ofFIG. 1 , andFIG. 6 is a cross-sectional view of a portion that is taken along the line III-III′ ofFIG. 1 .FIG. 7 is a schematic perspective view illustrating the corresponding relationship between a pattern of an organic light emitting layer and a color filter ofFIGS. 4 and 5 . - Referring to
FIGS. 4 and 5 , the light emittingdisplay device 100 may include asubstrate 110, anactive layer 111, agate insulating layer 116, agate electrode 117, aninterlayer insulating layer 118, asource electrode 119, adrain electrode 120, aplanarization layer 121, afirst electrode 130, apixel defining layer 140, a firstlight emitting layer 150 a, a secondlight emitting layer 150 b, asecond electrode 160, asecond substrate 170, acolor filter 180, and ablack matrix 190. The respective members may be laminated in a Z direction as illustrated inFIGS. 4, 5, and 6 . The light emittingdisplay device 100 may be implemented by a top emission light emitting display device, in which light generated from the firstlight emitting layer 150 a and the secondlight emitting layer 150 b is emitted to the top of thefirst substrate 110, i.e., in the direction of thesecond substrate 170. - The
first substrate 110 may be a transparent insulating substrate. The insulating substrate may be made of a material, such as glass, quartz, or polymer resin. Examples of the polymer material may include polyethersulfone (PES), polyacrylate (PA), polyarylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallylate, polyimide (Pi), polycarbonate (PC), cellulose triacetate (CAT or TAC), cellulose acetate propionate (CAP), and a combination thereof. In some embodiments, the insulating substrate may be a flexible substrate that is made of a flexible material, such as polyimde (PI). - The
first substrate 110 includes a plurality of pixels P (e.g., as shown inFIG. 1 ) that are arranged in a matrix form. Because the arrangement of the plurality of pixels P (e.g., as shown inFIG. 1 ) has been described in detail, the duplicate explanation thereof will be omitted. - The
active layer 111 may be arranged on thefirst substrate 110, and may include achannel area 112, asource area 113 and adrain area 114 that are positioned on both sides of thechannel area 112. Theactive layer 111 may be formed of silicon, for example, amorphous silicon or polysilicon, and thesource area 113 and thedrain area 114 may be doped with p-type or n-type impurities. Theactive layer 111 may be formed through a photolithography method, but is not limited thereto. - The
gate insulating layer 116 is formed on thefirst substrate 110 to cover theactive layer 111. Thegate insulating layer 116 electrically insulates thegate electrode 117 and theactive layer 111 from each other. Thegate insulating layer 116 may be made of an insulating material, for example, silicon oxide (SiOx), silicon nitride (SiNx), or metal oxide. Thegate insulating layer 116 may be formed through a deposition method, but is not limited thereto. - The
gate electrode 117 may be formed on thegate insulating layer 116. Thegate electrode 117 may be formed in a position that overlaps thechannel area 112 on thegate insulating layer 116. Thegate electrode 117 may include metal, alloys, metal nitride, conductive metal oxide, or transparent conductive materials. Thegate electrode 117 may be formed through a photolithography method, but is not limited thereto. - The interlayer insulating
layer 118 may be formed on thegate insulating layer 116 to cover thegate electrode 117. The interlayer insulatinglayer 118 may be made of silicon compounds. For example, theinterlayer insulating layer 118 may include silicon oxide, silicon nitride, silicon oxynitride, silicon carbonitride, or silicon oxycarbonate. The interlayer insulatinglayer 118 may serve to insulate thegate electrode 117 from thesource electrode 119 and thedrain electrode 120. The interlayer insulatinglayer 118 may be formed through a deposition method, but is not limited thereto. - The
source electrode 119 and thedrain electrode 120 may be formed on theinterlayer insulating layer 118. Thesource electrode 119 penetrates the interlayer insulatinglayer 118 and thegate insulating layer 116 to be connected to thesource area 113 of theactive layer 111, and thedrain electrode 120 penetrates the interlayer insulatinglayer 118 and thegate insulating layer 116 to be connected to thedrain area 114. - The
source electrode 119 and thedrain electrode 120 may include metal, alloys metal nitride, conductive metal oxide, or transparent conductive materials. For example, thesource electrode 119 and thedrain electrode 120 may be made of aluminum, an aluminum-containing alloy, aluminum nitride, silver, a silver-containing alloy, tungsten, tungsten nitride, copper, a copper-containing alloy, nickel, chrome, chrome nitride, molybdenum, a molybdenum-containing alloy, titanium, titanium nitride, platinum, tantalum, tantalum nitride, neodymium, scandium, strontium ruthenium oxide, zinc oxide, indium tin oxide, tin oxide, indium oxide, gallium oxide, and/or indium zinc oxide. Thesource electrode 119 and thedrain electrode 120 may be formed through a photolithography method, but is not limited thereto. - The
source electrode 119 and thedrain electrode 120 form a thin film transistor TFT together with theactive layer 111 and thegate electrode 117. The thin film transistor TFT may be a driving transistor which supplies current that corresponds to a voltage that is applied to thegate electrode 117 to a light emitting element EL. The thin film transistor TFT may be connected to a switching transistor. The switching transistor applies a voltage which corresponds to a data signal that is supplied through a data line to the thin film transistor TFT in response to a gate signal that is supplied through a gate line. - The
planarization layer 121 may be formed on theinterlayer insulating layer 118 to cover thesource electrode 119 and thedrain electrode 120. Theplanarization layer 121 may have a flat surface. Theplanarization layer 121 may be made of an insulating material. In some embodiments, theplanarization layer 121 may be made of an organic material, for example, polyimide. Theplanarization layer 121 may be formed through a deposition method, but is not limited thereto. - The
first electrode 130 is formed on thefirst substrate 110 for each pixel P (e.g., as shown inFIG. 1 ). Thefirst electrode 130 may be an anode electrode which receives a signal that is applied to thedrain electrode 120 of the thin film transistor TFT and provides holes to the firstlight emitting layer 150 a or the secondlight emitting layer 150 b, or may be a cathode electrode which provides electrons thereto. Thefirst electrode 130 may be used as a transparent electrode or a reflective electrode. In the case where thefirst electrode 130 is used as a transparent electrode, it may be formed of ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), ZnO (Zinc Oxide), and/or In2O3. Further, in the case where thefirst electrode 130 is used as a reflective electrode, it may be formed by forming a reflective layer that is made of Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, and/or a compound thereof and then forming ITO, IZO, ZnO, or In2O3 thereon. Thefirst electrode 130 may be formed through a photolithography process, but is not limited thereto. - The
pixel defining layer 140 partitions respective pixels P (e.g., as shown inFIG. 1 ) on thefirst substrate 110, and hasopenings first electrode 130. Accordingly, thepixel defining layer 140 enables the firstlight emitting layer 150 a or the secondlight emitting layer 150 b to be formed on thefirst electrode 130 through theopenings - The
openings first opening 141 a for exposing thefirst electrode 130 of the first pixel P1, thesecond opening 141 b for exposing thefirst electrode 130 of the second pixel P2, and thethird opening 141 c for exposing thefirst electrode 130 of the third pixel P3. The area of thethird opening 141 c may be larger than the area of thefirst opening 141 a and the area of thesecond opening 141 b, but is not limited thereto. - However, in the case where the area of the
third opening 141 c is larger than the area of thefirst opening 141 a and the area of thesecond opening 141 b, the light emitting efficiency of the secondlight emitting layer 150 b, which is arranged on thefirst electrode 130 that is exposed through thethird opening 141 c, may be lower than the light emitting efficiency of the firstlight emitting layer 150 a, which is arranged on thefirst electrode 130 that is exposed through thefirst opening 141 a and on thefirst electrode 130 that is exposed through thesecond opening 141 b. Accordingly, the area of the third pixel P3 that includes the secondlight emitting layer 150 b having low light emitting efficiency becomes increased, and the areas of the first pixel P1 and the second pixel P2 that include the firstlight emitting layer 150 a having high light emitting efficiency become decreased, so that the light emitting efficiency of the unit pixel UP can be entirely improved. - Further, the gap distance D2 between the
second opening 141 b and thethird opening 141 c, in which the secondlight emitting layer 150 b is arranged, may be longer than the gap distance D1 between thefirst opening 141 a and thesecond opening 141 b. Accordingly, in the case where the firstlight emitting layer 150 a and the secondlight emitting layer 150 b that emit different color lights are formed through a small mask scanning (SMS) deposition method or the like, the firstlight emitting layer 150 a and the secondlight emitting layer 150 b may be prevented from unwantedly overlapping each other. - The
pixel defining layer 140 may be made of an insulating material. Specifically, thepixel defining layer 140 may be formed to include at least one organic material selected from the group including benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acryl resin, and phenol resin. In some embodiments, thepixel defining layer 140 may be formed to include an inorganic material, such as silicon nitride. Thepixel defining layer 140 may be formed through a photolithography process, but is not limited thereto. - The first
light emitting layer 150 a is consecutively formed on thefirst electrodes 130 of the first pixels P1 and the second pixels P2 of the unit pixels UP arranged in the same row line. That is, the firstlight emitting layer 150 a may be arranged not only between the first pixel P1 and the second pixel P2 in one unit pixel UP but also between the adjacent unit pixels UP, and may be in a stripe shape. The firstlight emitting layer 150 a is arranged on both an upper surface of thepixel defining layer 140 between the first pixel P1 and the second pixel P2 in the unit pixel UP and an upper surface of thepixel defining layer 140 between the adjacent unit pixels UP. In this case, the firstlight emitting layer 150 a may have a first width EMW1. - The first
light emitting layer 150 a may be a yellow light emitting layer that emits yellow light. That is, the firstlight emitting layer 150 a may emit yellow light through recombination of holes provided from thefirst electrode 130 and electrons provided from thesecond electrode 160. For example, if the holes and the electrons are provided to the firstlight emitting layer 150 a, they are recombined to form excitons, and as the excitons are transited from an excited state to a ground state, the yellow light emitting layer emits yellow light. The yellow light emitting layer may be formed of a low-molecular or high-molecular organic material. In some embodiments, the yellow light emitting layer may include rubrene or IrC39H29N3, but is not limited thereto. The firstlight emitting layer 150 a may be formed through a small mask scanning (SMS) deposition method, but is not limited thereto. - The second
light emitting layer 150 b is consecutively formed on thefirst electrodes 130 of the third pixels P3 of the unit pixels UP arranged in the same row line. That is, the secondlight emitting layer 150 b may be arranged between the adjacent unit pixels UP, and may be in a stripe shape. In this case, the secondlight emitting layer 150 b is arranged on an upper surface of thepixel defining layer 140 between the adjacent unit pixels UP. The secondlight emitting layer 150 b may have a second width EMW2. The second width EMW2 may be larger than the first width EMW1 of the firstlight emitting layer 150 a, but is not limited thereto. - The second
light emitting layer 150 b may be a blue light emitting layer that emits blue light. That is, the secondlight emitting layer 150 b may emit blue light through recombination of holes provided from thefirst electrode 130 and electrons provided from thesecond electrode 160. For example, if the holes and the electrons are provided to the secondlight emitting layer 150 b, they are recombined to form excitons, and as the excitons are transited from an excited state to a ground state, the blue light emitting layer emits blue light. The blue light emitting layer may be formed of a low-molecular or high-molecular organic material. In some embodiments, the blue light emitting layer may include distryl compounds, but is not limited thereto. The secondlight emitting layer 150 b may be formed through a small mask scanning (SMS) deposition method, but is not limited thereto. -
FIG. 7 illustrates that the firstlight emitting layer 150 a and the secondlight emitting layer 150 b are alternately arranged in the column direction Y, but are not limited thereto. For example, light emitting layers that face each other between the adjacent unit pixels UP arranged in the column direction Y may be the firstlight emitting layers 150 a or the secondlight emitting layers 150 b. - Additionally, a hole injection layer and a hole transport layer may be interposed between the
first electrode 130 and the firstlight emitting layer 150 a and between thefirst electrode 130 and the secondlight emitting layer 150 b. Further, an electron transport layer and an electron injection layer may be interposed between the firstlight emitting layer 150 a and thesecond electrode 160 and between the secondlight emitting layer 150 b and thesecond electrode 160. In the case where thefirst electrode 130 is a cathode electrode and thesecond electrode 160 is an anode electrode, the electron injection layer and the electron transport layer may be interposed between thefirst electrode 130 and the firstlight emitting layer 150 a and between thefirst electrode 130 and the secondlight emitting layer 150 b, and the hole transport layer and the hole injection layer may be interposed between the firstlight emitting layer 150 a and thesecond electrode 160 and between the secondlight emitting layer 150 b and thesecond electrode 160. - The
second electrode 160 may be formed on the firstlight emitting layer 150 a and the secondlight emitting layer 150 b, and may be a cathode electrode that provides electrons to the firstlight emitting layer 150 a and the secondlight emitting layer 150 b or an anode electrode that provides holes thereto. In the same manner as thefirst electrode 110, thesecond electrode 160 may be used as a transparent electrode or a reflective electrode. In the case where the light emittingdisplay device 100 is implemented by a top emission light emitting display device, thesecond electrode 160 may be used as a transparent electrode. Thesecond electrode 160 may be formed through a deposition process, but is not limited thereto. - The
second substrate 170 may face thesecond electrode 160, and may be coupled to the first substrate at an interval through a sealant. Accordingly, thesecond substrate 170 can protect a structure on thefirst substrate 100 from the outside. Like thefirst substrate 110, thesecond substrate 170 may be a transparent insulating substrate. In some embodiments, thesecond substrate 170 may be an encapsulation layer that covers the whole structure. The encapsulation layer may include an insulating material. - The
color filter 180 is formed for each pixel P (e.g., as shown inFIG. 1 ) on thesecond substrate 170. Thecolor filter 180 may include afirst color filter 180A, asecond color filter 180B, and athird color filter 180C. - The
first color filter 180A may be formed on an area that overlaps thefirst opening 141 a on the first pixel P1 with an area that is larger than the area of thefirst opening 141 a. Thefirst color filter 180A may be a filter which filters the light that is emitted from the firstlight emitting layer 150 a of the first pixel P1, for example, yellow light, and emits a first color light, for example, red light, in the direction of thesecond substrate 170. - The
second color filter 180B may be formed on an area that overlaps thesecond opening 141 b on the second pixel P2 with an area that is larger than the area of thesecond opening 141 b. Thesecond color filter 180B may be a filter which filters the light that is emitted from the firstlight emitting layer 150 a of the second pixel P2, for example, yellow light, and emits a second color light, for example, green light, in the direction of thesecond substrate 170. - The
third color filter 180C may be formed on an area that overlaps thethird opening 141 c on the third pixel P3 with an area that is larger than the area of thethird opening 141 c. Thethird color filter 180C may be a filter which filters the light that is emitted from the secondlight emitting layer 150 b of the third filter P3, for example, blue light, and emits a light having a color purity that is different from the color purity of the light that is emitted from the secondlight emitting layer 150 b in the direction of thesecond substrate 170. In some embodiments, in the case where the light that is emitted from the secondlight emitting layer 150 b is a sky blue light having low color purity, thethird color filter 180C may be a filter which filters the sky blue light and emits deep blue light having high color purity in the direction of thesecond substrate 170 to implement clear color. - The
first color filter 180A, thesecond color filter 180B, and thethird color filter 180C as described above may emit three different color lights from the firstlight emitting layer 150 a and the secondlight emitting layer 150 b, which are formed on the unit pixels UP arranged in the same row line and emit two different color lights, in the direction of thesecond substrate 170. This is, because even if the first pixel P1 and the second pixel P2 in each unit pixel UP commonly include the firstlight emitting layer 150 a, thefirst color filter 180A and thesecond color filter 180B can filter one color light that is emitted from the firstlight emitting layers 150 a of the first pixel P1 and the second pixel P2 and emit two different color lights in the direction of thesecond substrate 170. - The first
light emitting layers 150 a, which are commonly included in the first pixel P1 and the second pixel P2 in each unit pixel UP, may be consecutively formed on thefirst electrodes 130 of the first pixels P1 and the second pixels P2 of the unit pixels UP arranged in the same row line using a small mask scanning (SMS) deposition method. That is, the firstlight emitting layers 150 a that emit the same color light may be consecutively formed on thefirst electrode 130 of the first pixel P1 and thefirst electrode 130 of the second pixel P2. - Accordingly, the gap distance D1 between the
first opening 141 a of thepixel defining layer 140 that exposes thefirst electrode 130 of the first pixel P1 and thesecond opening 141 b of thepixel defining layer 140 that exposes thefirst electrode 130 of the second pixel P2 in the unit pixels UP arranged in the same row line can be reduced to be shorter than the gap distance that is required between the first opening of the pixel defining layer that exposes the first electrode of the first pixel and the second opening of the pixel defining layer that exposes the first electrode of the second pixel to prevent the light emitting layers from being formed to overlap each other in the case of forming the light emitting layers that emit the different color lights on the first electrode of the first pixel and on the first electrode of the second pixel using the small mask scanning (SMS) method. - Accordingly, in the light emitting
display device 100 which includes the firstlight emitting layers 150 a that are consecutively formed on thefirst electrodes 130 of the first pixels P1 and the second pixels P2 of the unit pixels UP arranged in the same row line using the small mask scanning (SMS) deposition method, and the second light emitting display layers 150 b that are consecutively formed on thefirst electrodes 130 of the third pixels P3 of the unit pixels UP arranged in the same row line, the gap distance between the first pixel P1 and the second pixel P2 that emit different color lights among the unit pixels UP arranged in the same row line can be reduced, and thus the aperture ratio of the first pixel P1 and the second pixel P2 can be increased. - The
black matrix 190 may be arranged on thesecond substrate 170. Theblack matrix 190 may be arranged at the same level as the level of thecolor filter 180 on thesecond substrate 170, and may be arranged in areas except for the areas in which thefirst color filter 180A, thesecond color filter 180B, and thethird color filter 180C are formed on thesecond substrate 170. Theblack matrix 190 is formed of a light blocking material to block color mixing that may appear among thefirst color filter 180A, thesecond color filter 180B, and thethird color filter 180C. - As described above, because the light emitting
display device 100 according to an embodiment of the present invention includes the firstlight emitting layers 150 a which are consecutively formed on thefirst electrodes 130 of the first pixels P1 and the second pixels P2 that emit different colors in the unit pixels UP arranged in the same row line, thefirst color filters 180A which convert the light emitted from the firstlight emitting layer 150 a of the first pixel P1 into the first color light to emit the first color light, and thesecond color filters 180B which convert the light emitted from the firstlight emitting layer 150 a of the second pixel P2 into the second color light to emit the second color light, the gap distance between the first pixel P1 and the second pixel P2 that emit different color lights among the unit pixels UP arranged in the same row line can be reduced, and thus the aperture ratio of the first pixel P1 and the second pixel P2 can be increased. - Accordingly, the whole pixel aperture ratio of the light emitting
display device 100 can be increased. - Next, a method for manufacturing a light emitting
display device 100 according to an embodiment of the present invention will be described. Hereinafter, the unit pixels UP (e.g., as shown inFIG. 1 ) are illustrated in explaining the method for manufacturing a light emittingdisplay device 100. -
FIGS. 8 to 18 are cross-sectional views and a perspective view explaining a method for manufacturing a light emitting display device according to an embodiment of the present invention. - Referring to
FIG. 8 , afirst substrate 110 that includes thin film transistors TFT is prepared. Thefirst substrate 110 includes a plurality of pixels P (e.g., as shown inFIG. 1 ) arranged in a matrix form. Because the arrangement of the plurality of pixels P (e.g., as shown inFIG. 1 ) has been described, the duplicate explanation thereof will be omitted. The thin film transistor TFT may be arranged on thefirst substrate 110 in each of pixels P (e.g., as shown inFIG. 1 ), for example, in each of a first pixel P1, a second pixel P2, and a third pixel P3. - Then, referring to
FIG. 9 , aplanarization layer 121 is formed on thefirst substrate 110. Specifically, theplanarization layer 121 may be formed on aninterlayer insulating layer 118 to cover asource electrode 119 and adrain electrode 120 of the thin film transistor TFT. In this case, an opening for exposing thedrain electrode 120 may be formed on a portion of theplanarization layer 121 that overlaps thedrain electrode 120. Theplanarization layer 121 may be formed by depositing an insulating material on thesource electrode 119 and thedrain electrode 120 and patterning the deposited insulating material. - Then, referring to
FIG. 10 , afirst electrode 130 is formed on thefirst substrate 110 for each of the pixels P (e.g., as shown inFIG. 1 ). For example, thefirst electrode 130 may be formed on the first pixel P1, the second pixel P2, and the third pixel P3 by depositing a transparent electrode material or a reflective material, for example, the reflective material, on theplanarization layer 121 and patterning the deposited reflective material. In this case, thefirst electrode 130 may be formed to be connected to thedrain electrode 120 of the thin film transistor TFT for each of the first pixel P1, the second pixel P2, and the third pixel P3. - Then, referring to
FIG. 11 , apixel defining layer 140, which partitions the respective pixels P (e.g., as shown inFIG. 1 ) on thefirst substrate 110 and hasopenings first electrode 130 on theplanarization layer 121, is formed. Theopenings first opening 141 a for exposing thefirst electrode 130 of the first pixel P1, thesecond opening 141 b for exposing thefirst electrode 130 of the second pixel P2, and thethird opening 141 c for exposing thefirst electrode 130 of the third pixel P3. Because thefirst opening 141 a, thesecond opening 141 b, and thethird opening 141 c have been described, the duplicate explanation thereof will be omitted. Thepixel defining layer 140 that includes thefirst opening 141 a, thesecond opening 141 b, and thethird opening 141 c may be formed by depositing an insulating material on the whole surface of theplanarization layer 121 to cover thefirst electrode 130 and patterning the deposited insulating material. - Then, referring to
FIGS. 12 to 14 , firstlight emitting layers 150 a are consecutively formed on thefirst electrodes 130 of the first pixel P1 and the second pixel P2 of the unit pixels UP (e.g., as shown inFIG. 1 ) arranged in the same row line. - For example, as illustrated in
FIGS. 12 and 13 , thefirst substrate 110 is arranged on an upper portion of adeposition device 1 so that thepixel defining layer 140 faces amask 40 of thedeposition device 1 that is used in a small mask scanning (SMS) deposition method. Then, alight emitting material 15 a that is provided from thedeposition device 1 is deposited on thefirst electrodes 130 of the first pixel P1 and the second pixel P2 of the unit pixels UP (e.g., as shown inFIG. 1 ) arranged in the same row line while thedeposition device 1 and thefirst substrate 110 move relatively to each other. Accordingly, as illustrated inFIG. 14 , the firstlight emitting layers 150 a are consecutively formed on thefirst electrodes 130 of the first pixel P1 and the second pixel P2 of the unit pixels UP arranged in the same row line. That is, thelight emitting layers 150 a are formed in a stripe shape on thefirst electrodes 130 of the first pixel P1 and the second pixel P2 of the unit pixels UP (e.g., as shown inFIG. 1 ) arranged in the same row line on thefirst substrate 110. - On the other hand, although
FIG. 12 illustrates that thefirst substrate 110 rather than thedeposition device 1 is moved in direction A, thedeposition device 1 may be moved in an opposite direction to the direction A. - For example, as illustrated in
FIG. 13 , the light emittingdeposition device 1 for depositing a firstlight emitting material 15 a may include adeposition source 10, a depositionsource nozzle portion 20, a blockingplate assembly 30, amask 40, and amask frame 45. The firstlight emitting material 15 a may be, for example, a yellow light emitting material. - The
deposition source 10 includes afurnace 12 that is filled with the firstlight emitting material 15 a, and acooling block 11 surrounding thecrucible 12. Thecooling block 11 is to minimize radiation of heat from thecrucible 12 to an outside, and may include a heater for heating thecrucible 12. - The deposition
source nozzle portion 20 is arranged on one side of thedeposition source 10, and specifically, on the side that is directed from thedeposition source 10 to thefirst substrate 110. The depositionsource nozzle portion 20 includes a plurality of deposition source nozzles 21 that are formed in a column direction Y. The plurality of deposition source nozzles 21 may be arranged at equal intervals. The plurality of deposition source nozzles 21 make the firstlight emitting material 15 a that is evaporated by thedeposition source 10 pass through thenozzles 21 to be directed in the direction of thefirst substrate 110. - The blocking
plate assembly 30 is arranged on one side of the depositionsource nozzle portion 20. The blockingplate assembly 30 includes a plurality of blockingplates 31, and a blockingplate frame 32 arranged on the outside of the plurality of blockingplates 31. The plurality of blockingplates 31 may be arranged in line along the column direction Y. The plurality of blockingplates 31 may be arranged at equal intervals. Therespective blocking plates 31 may be formed to extend along Z direction, and may be arranged between the adjacent deposition source nozzles 21. The plurality of blockingplates 31 partition a space between the depositionsource nozzle portion 20 and themask 40 into a plurality of deposition spaces. - Because the blocking
plates 31 partition the space between the depositionsource nozzle portion 20 and themask 40 into the plurality of deposition spaces, the firstlight emitting material 15 a that is discharged from onedeposition source nozzle 21 is not mixed with the firstlight emitting material 15 a that is discharged from anotherdeposition source nozzle 21, but is deposited on thefirst substrate 110 throughslits 41 of themask 40. That is, the plurality of blockingplates 31 may serve to guide a movement path of the firstlight emitting material 15 a so that the firstlight emitting material 15 a that is discharged through the respective deposition source nozzles 21 is not dispersed in the column direction Y. - The blocking
plate frame 32 may be arranged on side surfaces of the plurality of blockingplates 31 to guide the movement path of the firstlight emitting material 15 a so that the firstlight emitting material 15 a that is discharged through the respective deposition source nozzles 21 is not dispersed in the row direction X. - The
mask 40 and themask frame 45 are arranged between thedeposition source 10 and thefirst substrate 110. Themask frame 45 may be formed in the form of a rectangular frame, and themask 40 may be coupled to the inside of themask frame 45. Themask 40 may include a plurality ofslits 41 that are arranged along the column direction Y. Each of theslits 41 may extend along the row direction X. The plurality ofslits 41 makes the firstlight emitting material 15 a that has passed through the deposition source nozzles 21 to be directed in the direction of thefirst substrate 110. Here, the number ofslits 41 may correspond to the number of firstlight emitting layers 150 a to be formed on thefirst substrate 110. - The
mask 40 may be arranged to be spaced apart from the blockingplate assembly 30, and may be connected to the blockingplate assembly 30 by aseparate connection member 35. - Then, referring to
FIGS. 15 and 16 , secondlight emitting layers 150 b are consecutively formed on thefirst electrodes 130 of the third pixel P3 of the unit pixels UP (e.g., as shown inFIG. 1 ) arranged in the same row line. That is, the secondlight emitting layers 150 b are formed in a stripe shape on thefirst electrode 130 of the third pixel P3 of the unit pixels UP (e.g., as shown inFIG. 1 ) arranged in the same row line. - In the same manner as the method for forming the first
light emitting layers 150 a, the secondlight emitting layers 150 b may be formed using thedeposition device 1 that is used in the small mask scanning (SMS) deposition method. However, thecrucible 12 of thedeposition device 1 is filled with the secondlight emitting material 15 b, and the secondlight emitting material 15 b is deposited on thefirst electrode 130 of the third pixel P3 of the unit pixels UP (e.g., as shown inFIG. 1 ) arranged in the same row line of thefirst substrate 110 to form the secondlight emitting layers 150 b as illustrated inFIG. 16 . The secondlight emitting material 15 b may be, for example, a blue light emitting material. - Then, referring to
FIG. 17 , asecond electrode 160 is formed on the firstlight emitting layer 150 a and the secondlight emitting layer 150 b. Thesecond electrode 160 may be formed by depositing a transparent electrode material or a reflective material, for example, a transparent material, on the firstlight emitting layer 150 a and the secondlight emitting layer 150 b and patterning the deposited transparent material. - Then, referring to
FIG. 18 , asecond substrate 170 is arranged on an upper portion of thesecond electrode 160. Thesecond substrate 170 may include acolor filter 180 formed for each of the pixels P (e.g., as shown inFIG. 1 ) and ablack matrix 190 arranged between asecond color filter 180B and athird color filter 180C. When thesecond substrate 170 is arranged on the upper portion of thesecond electrode 160, thecolor filter 180 may face thesecond electrode 160. -
FIG. 19 is a cross-sectional view of a portion that corresponds to portions ofFIGS. 4 and 5 in a light emitting display device according to another embodiment of the present invention. - Referring to
FIG. 19 , a light emittingdisplay device 200 according to another embodiment of the present invention has the same configuration as the configuration of the light emittingdisplay device 100 ofFIGS. 4 and 5 except for acolor filter 280. Accordingly, the light emittingdisplay device 200 according to another embodiment of the present invention will be described only around thecolor filter 280. - The
color filter 280 is similar to thecolor filter 180 ofFIGS. 4 and 5 . However, thecolor filter 280 includes thefirst color filter 180A and thesecond color filter 180B through omission of thethird color filter 180C from thecolor filter 180. This is because light that is discharged from the secondlight emitting layer 150 b, for example, blue light, is discharged as it is in the direction of thesecond substrate 170. In this case, a process of forming thecolor filter 280 can be simplified. - As described above, since the light emitting
display device 200 according to another embodiment of the present invention includes the firstlight emitting layers 150 a which are consecutively formed on thefirst electrodes 130 of the first pixels P1 and the second pixels P2 that emit different colors in the unit pixels UP arranged in the same row line, thefirst color filters 180A, which convert the light emitted from the firstlight emitting layer 150 a of the first pixel P1 into the first color light to emit the first color light, and thesecond color filters 180B which convert the light emitted from the firstlight emitting layer 150 a of the second pixel P2 into the second color light to emit the second color light, the gap distance between the first pixel P1 and the second pixel P2 that emit different color lights among the unit pixels UP arranged in the same row line can be reduced, and thus the aperture ratio of the first pixel P1 and the second pixel P2 can be increased. - Accordingly, the whole pixel aperture ratio of the light emitting
display device 200 can be increased. - Additionally, a method for manufacturing a light emitting
display device 200 according to another embodiment of the present invention is similar to the method for manufacturing a light emittingdisplay device 100 as described above with reference toFIGS. 8 to 18 . However, the method according to another embodiment of the present invention is different from the method according to an embodiment of the present invention on the point that thesecond substrate 170 that is arranged on the upper portion of thesecond electrode 160 includes thecolor filter 280 that includes only thefirst color filter 180A and thesecond color filter 180B. -
FIG. 20 is a cross-sectional view of a portion that corresponds to portions ofFIGS. 4 and 5 in a light emitting display device according to still another embodiment of the present invention. - Referring to
FIG. 20 , a light emitting a light emittingdisplay device 300 according to still another embodiment of the present invention has the same configuration as the configuration of the light emittingdisplay device 100 ofFIGS. 4 and 5 except for acolor filter 380 and the arrangement position of ablack matrix 390. Accordingly, the light emittingdisplay device 300 according to still another embodiment of the present invention will be described only around thecolor filter 380 and theblack matrix 390. - The light emitting
display device 300 may include asubstrate 110, anactive layer 111, agate insulating layer 116, agate electrode 117, aninterlayer insulating layer 118, asource electrode 119, adrain electrode 120, aplanarization layer 121, afirst electrode 130, apixel defining layer 140, a firstlight emitting layer 150 a, a secondlight emitting layer 150 b, asecond electrode 160, asecond substrate 170, acolor filter 380, and ablack matrix 390. The respective members may be laminated in Z direction as illustrated inFIG. 20 . The light emittingdisplay device 300 may be implemented by a bottom emission light emitting display device, in which light generated from the firstlight emitting layer 150 a and the secondlight emitting layer 150 b is emitted to the bottom of thefirst substrate 110, e.g., in the direction of thefirst substrate 110. - The
color filter 380 includes afirst color filter 380A, asecond color filter 380B, and athird color filter 380C, and is similar to thecolor filter 180 ofFIGS. 4 and 5 . However, thecolor filter 380 may be formed for each of pixels P (e.g., as shown inFIG. 1 ) between thefirst substrate 110 and thefirst electrode 130, for example, between the interlayer insulatinglayer 118 and theplanarization layer 121. Thefirst color filter 380A may be arranged on an area that overlaps thefirst opening 141 a on the first pixel P1, thesecond color filter 380B may be arranged on an area that overlaps thesecond opening 141 b of the second pixel P2, and thethird color filter 380C may be arranged on an area that overlaps thethird opening 141 c of the third pixel P3. - The
first color filter 380A may be a filter which filters the light that is discharged to the firstlight emitting layer 150 a of the first pixel P1, for example, yellow light, and emits a first color light, for example, red light, in the direction of thefirst substrate 110. - The
second color filter 380B may be a filter which filters the light that is discharged to the firstlight emitting layer 150 a of the second pixel P2, for example, yellow light, and emits a second color light, for example, green light, in the direction of thefirst substrate 110. - The
third color filter 380C may be a filter which filters the light that is discharged to the secondlight emitting layer 150 b of the third filter P3, for example, blue light, and emits a light having a color purity that is different from the color purity of the light that is discharged from the secondlight emitting layer 150 b in the direction of thefirst substrate 110. - The
black matrix 390 is similar to theblack matrix 190 ofFIGS. 4 and 5 . However, theblack matrix 390 may be formed in areas, which do not overlap thefirst color filter 380A, thesecond color filter 380B, and thethird color filter 380C, between thefirst substrate 110 and thefirst electrode 130, for example, between thefirst substrate 110 and theactive layer 111. Theblack matrix 390 can block color mixing that may appear among thefirst color filter 380A, thesecond color filter 380B, and thethird color filter 380C due to reflection of the light emitted from thecolor filter 380 by metal wirings, such as thegate electrode 117, thesource electrode 119, and thedrain electrode 120. - On the other hand, in the case where the light emitting
display device 300 is implemented by a bottom light emitting display device, thefirst electrode 130 may be used as a transparent electrode, and thesecond electrode 160 may be used as a reflective electrode. - As described above, because the light emitting
display device 300 according to still another embodiment of the present invention includes the firstlight emitting layers 150 a which are consecutively formed on thefirst electrodes 130 of the first pixels P1 and the second pixels P2 that emit different colors in the unit pixels UP arranged in the same row line, thefirst color filters 380A which convert the light discharged from the firstlight emitting layer 150 a of the first pixel P1 into the first color light to emit the first color light, and thesecond color filters 380B which convert the light discharged from the firstlight emitting layer 150 a of the second pixel P2 into the second color light to emit the second color light, the gap distance between the first pixel P1 and the second pixel P2 that emit different color lights among the unit pixels UP arranged in the same row line can be reduced, and thus the aperture ratio of the first pixel P1 and the second pixel P2 can be increased. - Accordingly, the whole pixel aperture ratio of the light emitting
display device 300 can be increased. - On the other hand, a method for manufacturing a light emitting
display device 300 according to still another embodiment of the present invention is similar to the method for manufacturing a light emittingdisplay device 100 as described above with reference toFIGS. 8 to 18 . However, the method according to still another embodiment of the present invention is different from the method according to an embodiment of the present invention on the point that thecolor filter 380 is arranged between thefirst substrate 110 and thefirst electrode 130, and theblack matrix 390 is formed between thefirst substrate 110 and theactive layer 112. - In concluding the detailed description, those skilled in the art will appreciate that many variations and modifications can be made to the example embodiments without substantially departing from the principles of the present invention. Therefore, the disclosed example embodiments of the invention are used in a generic and descriptive sense only and not for purposes of limitation. Instead, it should be understood that various changes and modifications can be made by one having ordinary skill in the art within the spirit and scope of the present invention as defined in the following claims, and their equivalents.
Claims (20)
1. A light emitting display device, comprising:
a first substrate;
a plurality of pixels arranged on the first substrate in a matrix and divided into a plurality of unit pixels arranged in a row direction and in a column direction, each of the unit pixels comprising a first pixel and a second pixel arranged along the row direction, and a third pixel arranged in the column direction with respect to the first pixel and the second pixel;
a first electrode corresponding to each of the pixels;
a pixel defining layer partitioning the respective pixels on the first substrate and having openings exposing the first electrode through the pixel defining layer;
first light emitting layers consecutively disposed on the first electrode of the first pixel and the second pixel of the unit pixels arranged in the same row line;
second fight emitting layers consecutively disposed on the first electrode of the third pixel of the unit pixels arranged in the same row line; and
a second electrode disposed on the first light emitting layer and the second light emitting layer.
2. The light emitting display device of claim 1 , wherein the first light emitting layers are disposed on both an upper surface of the pixel defining layer between the first pixel and the second pixel of the unit pixels in the same row line and an upper surface of the pixel defining layer between the unit pixels, and have a stripe shape.
3. The light emitting display device of claim 1 , wherein the first light emitting layers and the second light emitting layers alternate in the column direction.
4. The light emitting display device of claim 1 , wherein the first light emitting layers or the second light emitting layers face each other between adjacent unit pixels in the column direction.
5. The light emitting display device of claim 1 , wherein the first light emitting layer is a yellow light emitting layer configured to emit yellow light, and the second light emitting layer is a blue light emitting layer configured to emit blue light.
6. The light emitting display device of claim 1 , further comprising:
a second substrate disposed on the second electrode; and
a color filter disposed on the second substrate,
wherein the color filter comprises:
a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the second substrate; and
a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the second substrate.
7. The light emitting display device of claim 6 , wherein the first color is red, and the second color is green.
8. The light emitting display device of claim 6 , wherein the color filter further comprises a third color filter corresponding to the third pixel and configured to perform filtering of light that is discharged from the second light emitting layer and to emit a light having a color purity that is different from a color purity of the light that is discharged from the second light emitting layer in the direction of the second substrate.
9. The light emitting display device of claim 1 , further comprising:
a second substrate disposed on the second electrode; and
a color filter disposed between the first substrate and the first electrode,
wherein the color filter comprises:
a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the first substrate; and
a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the first substrate.
10. The light emitting display device of claim 1 , wherein the first pixels or the second pixels face each other between adjacent unit pixels among the unit pixels arranged in the same row line.
11. A light emitting display device, comprising:
a first substrate;
a plurality of pixels arranged on the first substrate in a matrix and divided into a plurality of unit pixels arranged in a row direction and in a column direction, each of the unit pixels comprising a first pixel and a second pixel arranged along the row direction, and a third pixel arranged in the column direction with respect to the first pixel and the second pixel;
a first electrode corresponding to each of the respective pixels and;
a pixel defining layer partitioning the respective pixels on the first substrate and having a gap distance between a third opening exposing the first electrode of the third pixel and a second opening exposing the first electrode of the second pixel that is longer than a gap distance between a first opening exposing the first electrode of the first pixel and the second opening;
first light emitting layers consecutively disposed on the first electrode of the first pixel and the second pixel of the unit pixels in the same row line;
second light emitting layers consecutively disposed on the first electrode of the third pixel of the unit pixels in the same row line; and
a second electrode disposed on the first light emitting layer and the second light emitting layer.
12. The light emitting display device of claim 11 , wherein the first light emitting layers are disposed on both an upper surface of the pixel defining layer between the first pixel and the second pixel of the unit pixels in the same row line and an upper surface of the pixel defining layer between the unit pixels, and have a stripe shape.
13. The light emitting display device of claim 11 , wherein the first light emitting layers and the second light emitting layers alternate in the column direction.
14. The light emitting display device of claim 11 , wherein the first light emitting layers or the second light emitting layers face each other between adjacent unit pixels in the column direction.
15. The light emitting display device of claim 11 , wherein the first light emitting layer is a yellow light emitting layer configured to emit yellow light, and the second light emitting layer is a blue light emitting layer configured to emit blue light.
16. The light emitting display device of claim 11 , further comprising:
a second substrate disposed on the second electrode; and
a color filter disposed on the second substrate,
wherein the color filter comprises:
a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the second substrate; and
a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the second substrate.
17. The light emitting display device of claim 16 , wherein the first color is red, and the second color is green.
18. The light emitting display device of claim 16 , wherein the color filter further comprises a third color filter corresponding to the third pixel and configured to perform filtering of light that is discharged from the second light emitting layer and to emit a light having a color purity that is different from a color purity of the light that is discharged from the second light emitting layer in the direction of the second substrate.
19. The light emitting display device of claim 11 , further comprising:
a second substrate disposed on the second electrode; and
a color filter disposed between the first substrate and the first electrode,
wherein the color filter comprises:
a first color filter corresponding to the first pixel and configured to perform filtering of light that is discharged from the first light emitting layer and to emit a first color light in a direction of the first substrate; and
a second color filter corresponding to the second pixel and configured to perform filtering of the light that is discharged from the first light emitting layer and to emit a second color light that is different from the first color in the direction of the first substrate.
20. The light emitting display device of claim 11 , wherein the first pixels or the second pixels face each other between adjacent unit pixels among the unit pixels in the same row line.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2015-0053237 | 2015-04-15 | ||
KR1020150053237A KR102466686B1 (en) | 2015-04-15 | 2015-04-15 | Light emitting display device |
Publications (2)
Publication Number | Publication Date |
---|---|
US20160343783A1 true US20160343783A1 (en) | 2016-11-24 |
US10026783B2 US10026783B2 (en) | 2018-07-17 |
Family
ID=57251820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/950,964 Active US10026783B2 (en) | 2015-04-15 | 2015-11-24 | Light emitting display device |
Country Status (4)
Country | Link |
---|---|
US (1) | US10026783B2 (en) |
KR (1) | KR102466686B1 (en) |
CN (1) | CN106057854B (en) |
TW (1) | TWI706558B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160225828A1 (en) * | 2015-02-03 | 2016-08-04 | Samsung Display Co., Ltd. | Organic light emitting diode display |
US11730038B2 (en) | 2017-07-04 | 2023-08-15 | Samsung Display Co., Ltd. | Organic light emitting display device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200082656A (en) * | 2018-12-31 | 2020-07-08 | 엘지디스플레이 주식회사 | Transparent display device |
US11302289B2 (en) | 2020-04-24 | 2022-04-12 | Rockwell Collins, Inc. | Display element, system, and method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060138941A1 (en) * | 2004-12-27 | 2006-06-29 | Osram Opto Semiconductors Gmbh | Electrolumenscent organic light emitting device and production method thereof |
US20070194707A1 (en) * | 2006-02-22 | 2007-08-23 | Samsung Electronics Co., Ltd | Display device |
US20070200488A1 (en) * | 2006-02-27 | 2007-08-30 | Naoyuki Ito | Display device |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW200718266A (en) * | 2005-10-27 | 2007-05-01 | Univision Technology Inc | Full color organic electroluminescent display device and fabricating the same |
KR101479994B1 (en) * | 2007-11-13 | 2015-01-07 | 삼성디스플레이 주식회사 | Organic light emitting diode display and method for manufacturing the same |
KR100965253B1 (en) | 2008-06-03 | 2010-06-22 | 삼성모바일디스플레이주식회사 | Organic light emitting diode display |
KR101769499B1 (en) | 2010-08-24 | 2017-08-21 | 삼성디스플레이 주식회사 | Organic electroluminescence emitting display device |
JP5837316B2 (en) | 2011-03-25 | 2015-12-24 | 株式会社Joled | Organic EL display device and manufacturing method thereof |
JP2012204164A (en) | 2011-03-25 | 2012-10-22 | Sony Corp | Organic el display device and method for manufacturing the same |
KR101960709B1 (en) | 2012-07-13 | 2019-03-25 | 삼성디스플레이 주식회사 | Apparatus for organic layer deposition, method for manufacturing of organic light emitting display apparatus using the same, and organic light emitting display apparatus manufactured by the method |
KR20140039599A (en) | 2012-09-24 | 2014-04-02 | 삼성디스플레이 주식회사 | Apparatus for organic layer deposition, and method for manufacturing of organic light emitting display apparatus using the same |
KR101994838B1 (en) | 2012-09-24 | 2019-10-01 | 삼성디스플레이 주식회사 | Apparatus for organic layer deposition, method for manufacturing of organic light emitting display apparatus using the same, and organic light emitting display apparatus manufactured by the method |
KR102028989B1 (en) * | 2013-04-16 | 2019-10-07 | 엘지디스플레이 주식회사 | Organic light emitting diode display device |
KR102080010B1 (en) * | 2013-06-04 | 2020-02-24 | 삼성디스플레이 주식회사 | Apparatus for thin film depositon and method for manufacturing of orgarnic light emitting display apparatus using the same |
KR20150005264A (en) * | 2013-07-05 | 2015-01-14 | 삼성디스플레이 주식회사 | Organic light emitting display device and method of manufacturing the same |
KR102119159B1 (en) * | 2013-08-14 | 2020-06-05 | 삼성디스플레이 주식회사 | Organic light emitting diode display |
CN104022143B (en) * | 2014-06-13 | 2017-02-15 | 上海和辉光电有限公司 | OLED pixel arrangement structure |
-
2015
- 2015-04-15 KR KR1020150053237A patent/KR102466686B1/en active IP Right Grant
- 2015-11-24 US US14/950,964 patent/US10026783B2/en active Active
-
2016
- 2016-04-01 TW TW105110665A patent/TWI706558B/en active
- 2016-04-13 CN CN201610228093.2A patent/CN106057854B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060138941A1 (en) * | 2004-12-27 | 2006-06-29 | Osram Opto Semiconductors Gmbh | Electrolumenscent organic light emitting device and production method thereof |
US20070194707A1 (en) * | 2006-02-22 | 2007-08-23 | Samsung Electronics Co., Ltd | Display device |
US20070200488A1 (en) * | 2006-02-27 | 2007-08-30 | Naoyuki Ito | Display device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160225828A1 (en) * | 2015-02-03 | 2016-08-04 | Samsung Display Co., Ltd. | Organic light emitting diode display |
US9741770B2 (en) * | 2015-02-03 | 2017-08-22 | Samsung Display Co., Ltd. | Organic light emitting diode display |
US11730038B2 (en) | 2017-07-04 | 2023-08-15 | Samsung Display Co., Ltd. | Organic light emitting display device |
Also Published As
Publication number | Publication date |
---|---|
US10026783B2 (en) | 2018-07-17 |
CN106057854B (en) | 2021-09-21 |
KR20160123451A (en) | 2016-10-26 |
KR102466686B1 (en) | 2022-11-14 |
TWI706558B (en) | 2020-10-01 |
CN106057854A (en) | 2016-10-26 |
TW201644045A (en) | 2016-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6254218B2 (en) | Organic light emitting display | |
US7829887B2 (en) | Organic light emitting diode display device and method of manufacturing the same | |
US9722007B2 (en) | Light emitting display device | |
US7829888B2 (en) | Organic light emitting diode display device and method of manufacturing the same | |
US20070194699A1 (en) | Display apparatus and method of manufacturing the same | |
US11309369B2 (en) | Display apparatus | |
US9653525B2 (en) | Light emitting display device | |
US8729570B2 (en) | Mask frame assembly for thin film deposition, organic light-emitting display device using the same, and method of manufacturing the organic light-emitting display device | |
US10026783B2 (en) | Light emitting display device | |
US9887248B2 (en) | Display device and manufacturing method thereof | |
US9691822B2 (en) | Organic light emitting diode display and manufacturing method thereof | |
JP2018026278A (en) | Organic el display panel, and manufacturing method of organic el display panel | |
US20230032621A1 (en) | Display apparatus | |
US9099408B2 (en) | Organic light-emitting diode (OLED) display | |
US9711573B2 (en) | Organic light-emitting display apparatus | |
CN111370449A (en) | Organic light emitting display device | |
US20220199937A1 (en) | Display device | |
US11037490B2 (en) | Organic light emitting display device | |
US10770528B2 (en) | Organic light emitting display device | |
KR20050087284A (en) | Electro-luminescent display device | |
JP5286865B2 (en) | Electroluminescent panel manufacturing method and electroluminescent panel | |
US20220238852A1 (en) | Display device and method for manufacturing display device | |
WO2022075309A1 (en) | Display device and method for manufacturing display device | |
KR100670374B1 (en) | Organic light emitting display apparatus | |
CN116194979A (en) | Display device and method for manufacturing display device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SAMSUNG DISPLAY CO., LTD., KOREA, REPUBLIC OF Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, DONG GYU;REEL/FRAME:038394/0673 Effective date: 20150909 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 4 |